Climate Change and the Fate of Dissolved Organic Carbon in the Mackenzie Delta, NWT

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dc.contributor.advisorTank, Suzanne
dc.creatorWeeks, Gayla
dc.date.accessioned2016-11-25T14:21:44Z
dc.date.available2016-11-25T14:21:44Z
dc.date.copyright2016-08-17
dc.date.issued2016-11-25
dc.date.updated2016-11-25T14:21:44Z
dc.degree.disciplineGeography
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractCircumpolar river deltas are a potential hotspot for the biogeochemical cycling of dissolved organic carbon (DOC) as it is leached from the surrounding landscape into deltaic river channels and eventually discharged to the near shore Arctic Ocean. The Mackenzie Delta, an intricate network of over 45,000 lakes in the western Canadian Arctic, is strongly dependent on both the flood dynamics and biogeochemical properties of the northward flowing Mackenzie River. This study examined the seasonal and spatial variability of photochemical and biological DOC degradation within select river channels and lakes of the Mackenzie Delta. The study revealed significant differences in DOC loss via photochemical (PCD) and biological degradation (BDOC) within lakes of differing flood regimes, while river waters showed only minor losses via BDOC, but significant photochemical degradation. In addition, incubation experiments indicate that BDOC is strongly enhanced through UV exposure.
dc.identifier.urihttp://hdl.handle.net/10315/32800
dc.language.isoen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectEnvironmental science
dc.subject.keywordsArctic
dc.subject.keywordsMackenzie Delta
dc.subject.keywordsDissolved organic carbon
dc.subject.keywordsDOC
dc.subject.keywordsPhotochemical degradation
dc.subject.keywordsBiological degradation
dc.subject.keywordsBDOC
dc.subject.keywordsMackenzie River
dc.subject.keywordsLakes
dc.subject.keywordsBiogeochemistry
dc.titleClimate Change and the Fate of Dissolved Organic Carbon in the Mackenzie Delta, NWT
dc.typeElectronic Thesis or Dissertation

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